- To open the file "kidz addition.capx" you need to download the Construct2 in the Scirra site.
- To export the game, use the option File -> Export Project.
- Install admob plugin, extract file admobs plugin in your foldes Construct installation. C:/Program Files/Construct 2/exporters/html5/plugins
In the free version of Construct2 you can export to HTML5.